On Valentine's Day, popular mystery author Aigasa Kurisu invites Kiyotaka and Aoi to the Shinkokan at the Yoshida-Sanso. But instead of an innocent book reading, they find a group of suspects and a mystery to be solved.
"I, Aigasa Kurisu, have 
been deceiving my readers.
.أنا، أيغاسا كوريو، كنتُ أخدع قرّائي"
„Ich, Aigasa Kurisu habe
meine Leser betrogen.
"Yo, Aigasa Kurisu,
engañé a mis lectores.
"Yo, Aigasa Kurisu,
engañé a mis lectores.
« Moi, Kurisu Aigasa,
j’ai trompé mes lecteurs.
"Io, Aigasa Chris,
"Eu, Aigasa Kurisu, tenho
enganado os meus leitores.
«Я, Курису Аигата, 
обманывала своих читателей.